Method of making fuse links



IA. L. EUSTICE.

METHOD 0F MAKING FUSE LINKS. APPLICATION FILED MMI. I9I8.

1,426,82?, Patented Aug. 22, 19222.A

j? y J5 J4 J5: 2f@ EL? "D0 JP Z! 22 J6 J5 J6 @WO-5%W/ i JMW @gmUltllfllll Slkylllll ALFRED L. EUSTIVCE, OF CHICAGO, LLINOIS.

METHOD OF MAKING FUSE LINKS.

ineens?.

T o all whom t may concern.'

Be it known that l, ALFRED L. Eusrion, a citizen of the United States,and resident of Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Methods of MakingFuse Links, of which the following is a specification.

This invention relates to a method of making fuse links.

One of the objects of the invention is to facilitate the making of fuselinks.

Another object is to improve the method of making fuse links in a mannerto meet commercial requirements.

Generally speaking these and otherkobjects are accomplished by use ofthe method consisting rst in providing a plurality of terminal blanksand a fusible blank, connecting the blanks to form a single blank, andthen cutting the same in accordance with requirements.

The invention illustrated on the accompanying sheet of"drawings inwhichC Figure 1 is a perspective view of the terminal blanks and fusibleblank, provided with cooperating bent edges in engagement with eachother.

Figure 2 is a side elevation of the completed fuse link, the blankshaving their edges pressed into a locking engagement with each other andcut in accordance with requirements, and

Figure 3 is a plan view of a pluralityT of completed fuse links, stampedfrom the completed blank.

The novel features of the invention will he apparent from the followingdescription and drawing and will be particularly pointed out in theappended claims.

By the use of my method I endeavor to make a relatively large number offuse links from a unified blank formed from three separate blanks, twoof which are terminal blanks and the other of which is the fusibleblank.

By referring to the figures on the drawings, it will be noted that Ihave provided the three blanks 10, 11 and 12, the first two of whichpreferably are of copper and the last preferably is of zinc. Theseblanks are taken from stock in the form of straight ribbons. One of thelongitudinal edges 13 lof each of the terminal blanks -is bent,preferably at right angles to the main body portion. The tWolongitudinal edges 14; the

Specification of Letters Patent. Pi-,Qiltfgd Aug, 22, 1922,

Application filed March 7, 1918. Serial No. 220,964.

fusible blank 12 are bent preferably at right angles to the main bodyportion of the blank to form, in effect, a channel member. The bent overedges 13 and 14 are then brought into overlapping engagement with eachother whereupon the blanks are placed in suitable dies and pressed intolocking engagement with each other, as shown in Fig. 2 of the drawing.bent edges 13 and 14 of the blanks are pressed into interengaging hookportions and when pressed sufficiently will form a good mechanical aswell as an electrical connection between the blanks. To improve theelectrical connection of the unified blank, the interengaging hookportions or `ioints between the original blanks 10, 11 and 12 aresoldered. The completed unified blank 15 is then run through thestamping n'iachii'ie whereupon the fuse links 16 are stamped out. Itwill be noted that each fuse link includes two terminal members 17 and18 and the fusible member 16, the first terminal member being providedwith a longitudinally arranged slot 19 and the other terminal memberhaving a laterally extending slot 2O for securing the same to otherterminal members. The fusible member 16, it will be noted, is of thedrop-out section type, the link being provided with laterally arH rangedstamped out portions 21 to form relatively narrow necks 22, to cause themelting` of the link at the neck portions, whereby the intermediateportion of the member 16 will drop out of mechanical and electricalengagement with the other parts of the link.

By means of this process, fuses may he provided in a simple manner froma anilied blank composed of a plurality of separate blanks and in amanner to meet commercial requirements.

It is my intention to cover all modifications -of the invention fallingwithin the scope of the Jfollowing claims.

I claim:

1. The method of forming fuse links consisting first in providing aplurality of terminal blanks and a fusible blank, said fusible blankbeing flanked by said terminal blanks, then bending the edges of saidblanks and pressing the same to form mechanically secure connectionstherebetween thereby providing a unified blank, then perfecting theelectrical connection by soldering, and then stamping fuse links fromthe unified blank, transversely of said. bent edges to produce As shownin this figure the "fuse links from the unied blank, transversely ofsaid bent edges to produce links having ejfusible Central portion andend portions out rfrom said terminal blanks.

` Signed etChioago, lllinois, this 21st day 15 of February, 1918. M

ALFRED L. EUSTICE. llitnesses: v

CHAs. L. BYRON, L. E. HANNEN.

